There is another interesting review of Australia’s compulsory voting system from an American perspective coming from an article at the HuffPost by Josh Butler:

Higher than usual turnout is expected for the 2018 midterm elections, and one indication is a surge in early voting in Texas primaries, with Democratic turnout up 69 percent and Republican votes up 20 percent from the early count for the 2014 primaries. And, unlike in Australia, no one dares tell Texans they have to vote.

High election turnouts throughout this past year follow the divisive and hotly contested 2016 general election, in which 55.7 percent of voting-age Americans cast a ballot, about 86 percent of registered voters, a healthy number for the U.S.

But in Australia in 2016, about 87 percent of voting-age people participated in the nation’s federal election, or 91 percent of enrolled voters. And that was the lowest turnout since the country introduced compulsory voting in 1924.

See full story here.